scopeexample2.htm

来自「这是javascript高级程序设计的源码」· HTM 代码 · 共 28 行

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<html>
    <head>
        <title>Scope Example</title>
    </head>
    <body>
        <p>In this example, the <code>var</code> statement <strong>is</strong> used to define
        the variable <code>sMyFirstName</code>, so it is created as a variable
        at the <code>sayFirstName()</code> scope. This is proved because the second function
        causes an error when it tries to access the variable.</p>
        <script type="text/javascript">

            function sayFirstName() {
                var sMyFirstName = "Nicholas";
                alert(sMyFirstName);
            }
            
            function sayFirstNameToo() {
                alert(sMyFirstName);
            }
            
            sayFirstName();
            sayFirstNameToo();
        </script>
    </body>
</html>


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